20629430 has 8 divisors (see below), whose sum is σ = 37132992. Its totient is φ = 8251768.

The previous prime is 20629429. The next prime is 20629447. The reversal of 20629430 is 3492602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 20629430.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1031462 + ... + 1031481.

It is an arithmetic number, because the mean of its divisors is an integer number (4641624).

Almost surely, 2^20629430 is an apocalyptic number.

20629430 is a deficient number, since it is larger than the sum of its proper divisors (16503562).

20629430 is a wasteful number, since it uses less digits than its factorization.

20629430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2062950.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 20629430 is about 4541.9632319075. The cubic root of 20629430 is about 274.2599607155.

The spelling of 20629430 in words is "twenty million, six hundred twenty-nine thousand, four hundred thirty".